Transmission for engines



May 4 1926. 1,583,368

A. L. POWELL TRANSMISSION FOR ENGINES Original Filed y 5. 1921 too GAL/AQUA I Patented May 4, 1926.

-- UNITED stares ALVAH L. POWELL, or MILES CITY, MONTANA, nssronoa 'ro THE A. L.- rjownLL I rowEn-coMPANY rnoonroaarnn, or MILES CITY, MONTANA, A oonronn'rron.

TRANSMISSION FOR ENGINES.

Original application filed May 3,1921, Serial No. 466,591. Divided and this application filed December 22, 1922. Serial No. 608,506.

To all whom it may concern:

Be it known that I, ALvAH L. PoWELL, a citizen of the United States, residing at ,Miles City, in the county of Custer and In engines of 'theconventional type,the

piston presses on one side of the cylinder during the explosion stroke while there is very little lateral pressure on the other side of the cylinder. This causes both the cylinder and the piston, together with the piston rings, to beunevenly worn'which necessit-ates the reboring of the cylinder. It is well. known that the side slap of the piston causes much friction and consequent loss of power. These objections I am enabled to overcome by my improved construction.

In the annexed drawings I show an application of my invention in which:

Figure 1 is an elevation of one form of my invention.

V Figure 2 is a side elevation thereof and Figure 3 is a side elevation showing a plurality of the transmission units assembled so as totransmit the power developed in all of'the cylinders'to a single shaft. In the drawings A designates a piston provided with any conventional type of piston rings 13 and a wrist pin C extending diametrically through the piston. The piston A is, of course, slidable in the cylinder D as is well known in the art. In a suitable frame E are journaled stub shafts F and G on which are securely attached gears H and I, respectively, which gears intermesh with each other, are of the same size and are provided with the same number of teeth, where by these gears may rotate in opposite dis rections but at the same rate of speed. "i he shaft F extends beyond the frame E in one direction and is provided'with a crank arm J on the outer end thereof which crank arm gears H or I drive the gear Q.

carries a pin K. 'A'pitman L connects the wrist pin O to the pin K. In like manner the shaft G extends slightly beyond. the other side of the frame E which shaft carries a crank M which is connected to the pistoi'by the pin N, pitman O and wrlsr. pin

A main shaft P is journaled beneath the gear H andcarries a gear Q, adapted to mesh witlrthe gear H and'to be drlven thereby. Obviously, however, the gear Q, could be made to mesh with the gear I inasmuch as it is immaterial which or the In my preferred construction the gear Q, of the same size as the gears 11 and I but I do not confine myself to such a construction for it may be advisible under certain conditions to form the gear Q. larger or smaller than the gears H and I.

The composition of forces in my engine exactly balance so. that side slap'is prevented and so that there would be no tendency of the piston A. to press against the side of the cylinder B in one direction any more than in any other direction.

I furthermore find it preferable to form the pitmans L and O of flat bar metal bent clearly shown is Figure Qand 3iso as to place the bearings of the gether on the wrist pin 0.

In operation, the force is transmitted from the piston A through the wrist pin C to the pitmans L and O and thence to the shafts-F Ihave made l inwardly near the top ends thereof as is pitmans close toand G through the pins K'and N and cranks J and M respectively; The force is then transmitted to the shaft P through the oppositely rotating intermeshing gears H and I and the gear Q which latter gear receives the combined force of the gears H and I.

While I have shown one preferred construction of my invention I do not limit.

myself to the specific construction shown therein except as I may limit myself in the following" claim.

naled in the said piston, two parallel shafts,

bearings for saidshafts, a crank on each shaft, pitinans connecting the crank and the Wrist pin, intermeshing gears carried by the shafts and adapted to be rotated in opposite directions thereby, a third shaft, a gear thereon adapted to mesh with one of the aforementioned gears, the two cranks being positioned on opposite sides of the said internieshing gears and being longer than the radii of the said gears whereby a long piston stroke is obtained.

In testimony whereof I aflix my signature.

ALVAH L. POVVELQ. 

